334
FZPQ50 PGUM 191840
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
440 AM CHST MON JUL 20 2026
DISCUSSION
A LOW RISK OF RIP CURRENTS IS EXPECTED TO CONTINUE ALONG ALL REEFS
FOR AT LEAST NEXT FEW DAYS, FOLLOWED BY THE RIP RISK POTENTIALLY
BECOMING MODERATE ALONG SOUTH AND/OR WEST FACING REEFS AS SOUTHWEST
SWELL STRENGTHENS ONCE AGAIN.
GUZ001-MPZ001>003-200800-
GUAM-ROTA-TINIAN-SAIPAN-
440 AM CHST MON JUL 20 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM MONDAY
THROUGH 600 PM TUESDAY
TODAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT AROUND 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY..........85 DEGREES.
MAX HEAT INDEX.........AROUND 100.
WINDS...............SOUTHEAST AT 5 TO 15 MPH.
TONIGHT
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT AROUND 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............SOUTHEAST AT AROUND 10 MPH.
TUESDAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT AROUND 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............EAST AT 5 TO 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 1.1 FEET AT 6:33 AM MONDAY
HIGH TIDE 2.1 FEET AT 12:00 PM MONDAY
LOW TIDE 0.9 FEET AT 6:06 PM MONDAY
HIGH TIDE 2.5 FEET AT 12:35 AM TUESDAY
LOW TIDE 0.9 FEET AT 7:29 AM TUESDAY
HIGH TIDE 1.9 FEET AT 1:30 PM TUESDAY
AT ROTA ISLAND...
LOW TIDE 1.0 FEET AT 6:27 AM MONDAY
HIGH TIDE 2.0 FEET AT 11:57 AM MONDAY
LOW TIDE 0.9 FEET AT 6:00 PM MONDAY
HIGH TIDE 2.4 FEET AT 12:32 AM TUESDAY
LOW TIDE 0.8 FEET AT 7:23 AM TUESDAY
HIGH TIDE 1.8 FEET AT 1:27 PM TUESDAY
AT TINIAN ISLAND...
LOW TIDE 0.3 FEET AT 6:10 AM MONDAY
HIGH TIDE 1.5 FEET AT 11:58 AM MONDAY
LOW TIDE 0.3 FEET AT 5:43 PM MONDAY
HIGH TIDE 1.9 FEET AT 12:33 AM TUESDAY
LOW TIDE 0.3 FEET AT 7:06 AM TUESDAY
HIGH TIDE 1.4 FEET AT 1:28 PM TUESDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.8 FEET AT 6:56 AM MONDAY
HIGH TIDE 1.6 FEET AT 12:22 PM MONDAY
LOW TIDE 0.7 FEET AT 6:13 PM MONDAY
HIGH TIDE 2.2 FEET AT 12:52 AM TUESDAY
LOW TIDE 0.6 FEET AT 7:50 AM TUESDAY
HIGH TIDE 1.5 FEET AT 1:45 PM TUESDAY
* LOW RISK OF RIP CURRENTS - STRONG CURRENTS CAN STILL OCCUR NEAR
JETTIES AND REEF CHANNELS. ALWAYS HAVE A FLOTATION DEVICE WITH YOU
IN THE WATER.
MODERATE RISK OF RIP CURRENTS - WAVE CONDITIONS SUPPORT STRONGER OR
MORE FREQUENT RIP CURRENTS. ALWAYS HAVE A FLOTATION DEVICE WITH YOU
IN THE WATER.
HIGH RISK OF RIP CURRENTS - LARGE WAVES WILL PRODUCE STRONG RIP
CURRENTS, ESPECIALLY ALONG NARROW REEFS AND BEACHES. RIP CURRENTS
WILL BE LIFE THREATENING. IF CAUGHT IN A RIP CURRENT, SWIM PARALLEL
TO THE BEACH RATHER THAN AGAINST THE CURRENT.
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